xlii The mierofcope explained. 
glaffes K or L, or place it upon the ivory cylinder at r, 
one fide of which being black, the other fide white, for a 
contraft to any objedl that may offer. 
T, is a pair of forceps to take up any fmall obje£f. 
Remove or unfcrew the body ABC, and fcrew in its 
place the black eye-piece H, and you will have an excel¬ 
lent fmgle mierofcope to be ufed with all the above ap¬ 
paratus already defer jbed. 
To 
